Mechanical movement



UNITED STATES PATENT OFFIOE.

JOSEPH H. DAVIS, OF IVOBURN, MASSACHUSETTS.

MECHANICAL MOVEMENT.

Specification of Letters Patent No. 22,008, dated November 2, 1858.

To all whom t may concern:

Be it known that I, Josnrrr H. DAvIs, of IVoburn, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Mechanical Movements; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l represents a central vertical section through the mechanism which I have arranged to illustrate the invention. Fig. 2 represents the manner of connecting the bent and weighted arms at their tops, and Fig. 3 represents the manner in which the arms aforesaid, are connected to the hub, at their lower ends.

Similar letters of reference where they occur in the separate figures denote like parts in all of them. To enable others skilled in the art to make and use my invention, I will proceed to describe the same with reference to the drawings.

A, represents a frame in which the top and bottom journals a, o, are supported in suitable boxes or bearings. These journals are connected together as follows: On the upper journal a, there is a spur wheel o to which may be aliixed, on its underside a flat plate or disk cl, to shield the parts below7 it from coniiict with said gear c. To the underside of the gear or spur wheel c, and through the shield (Z, are hinged four' arms e, e, e, e, to each one of which the upper end of one of the bent arms B, B, B, B, is attached by a pivot or stud in the top of the bent arm, which enters a hole in the arm e. It will thus be seen that there are two pivoted or hinged points between the tops of the bent arms B, and the pinion o, viz: by the studs or pivots (as seen at m Fig. l) and by hinges (as seen at 7, Fig. 2.) The arms B, are bent as shown in Fig. l, or, they may be curved into the form of arcs of circles or ellipses, so as to present a greater horizontal than vertical diameter, and when made of wood they may be loaded, at or near their greatest distance from the chord of the arc, with metal O. But when made of metal entirely the excess of metal may be cast on at that point. The lower ends of these bent arms or ribs B, extend into a hub D, and may be held to said hub by pins g, g, but so that they have some play, as they must tip on starting the mechanism. This hub D, is permanently fastened to the top of the lower journal Z9, and on the lower end of said journals b, there is a gear wheel F which revolves with said journal I), and from which may be communicated to any machinery. I mean that the power from the prime motor may through this gear wheel be communicated to any machinery.

E, is a brake lever (there being two just alike) which are pivoted at L, and cut away so as to come close up to the hub D; their forward ends may be connected to a crank z', for the purpose of applying said brakes to the hub when it is desired to stop the mechanism.

The power that impels the skeleton wheel composed of the bent and weighted ribs B, may be imparted through a crank G, a gear wheel H, and an intermediate gear I, which latter meshes with and turns the pinion o heretofore described. I have represented four ribs B, as composing this wheel, but it may be made of two, three, four or more ribs, but so disposed as to be opposite each other, and at equal distances from a common center, so as to balance each other. The to-ps and bottoms of these ribs, may be linked together by chains n, or other flexible connections that will allow them to rock in their supports, but hold them from separating should any one of their pivots or hinges give way. m, are other chains, or flexible connections for allowing the rising and falling motion of each separate rib of the series to be transmitted to its fellow-the ribs, when the skeleton wheel is under way, having two motions, viz: Besides their rotary motion around a common center, they have the toggle motion in their end supports. It will be perceived on starting the wheel and by applying slight resistance to the gear F, that the arms B, all move on their pivots or hinged points. If instead of the hinged or pivoted points these ribs were rigidly fixed to the two pivots a, the wheel would be the same in effect as a fly or balance wheel. But I have no knowledge of a fly or balance wheel whose rim was composed of sections hinged together by toggle joints or joints admitting' of double motions; and my invention is therefore different in this respect from anything of which I have knowledge for this or any other purpose.

Having thus fully described the nature and object of my invention, what I claim gether, and connected to the gearing at their therein as new and desire to secure by Letends substantially in the manner7 and for the 10 ters 1Patent ish f f purpose set forth.

Tie arrangement erein set Orth, or 5 transmitting` power from any prime motor JOSEPH H DAVIS' to a propelling gear or Wheel viz: through Vtnesses: the intervention of a series of curved or bent A. B. S'roUGH'roN, and. Weighted arms, said arms Working to- 1 THos. H. UPPERMAN. 

